2016-03-27 14:27
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I am trying to get the data from http request in golang. I am using net/http package. In my server handler I am trying to get the data from r.Body

body, err := ioutil.ReadAll(r.Body)
if err != nil {
    log.Printf("FATAL IO reader issue %s ", err.Error())

it works fine when I curl the service with some input data.

curl --data '{"AppName":"Proline","Properties":null,"Object":"","Timestamp":"2016:03:27 00:08:11"}' -XGET http://localhost:8081/api/services/test/

But when I try to call this service from ajax call r.Body is empty.

requestJSON = '{"AppName":"Proline","Properties":null,"Object":"","Timestamp":"2016:03:27 00:08:11"}'
  type: "GET",
  url: "http://localhost:8081/api/services/test/",
  data: requestJSON,
  contentType: "application/json; charset=utf-8",
  dataType: "json",
  success: function(data){alert(data);},
  failure: function(errMsg) {

So I changed to read the input data from r.Form

var body []byte
for key, _ := range r.Form {
    body = []byte(key)

But now the curl request fails. Is there a standard way to retrieve input data from http request in golang? I am using Go 1.6. Could someone help me with this?

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我正在尝试从golang中的http请求获取数据。 我正在使用net / http包。 在我的服务器处理程序中,我试图从r.Body

  body中获取数据,err:= ioutil.ReadAll(r.Body)
if err!= nil {\  n log.Printf(“ FAT IO读取器发出%s”,err.Error())

当我将服务卷曲一些 输入数据。

  curl --data'{“ AppName”:“ Proline”,“ Properties”:null,“ Object”:“”,“ Timestamp”:“ 2016  :03:27 00:08:11“}'-XGET http:// localhost:8081 / api / services / test / 

但是当我尝试 从ajax调用此服务,调用r.Body为空。

  requestJSON ='{“ AppName”:“ Proline”,“ Properties”:null,“ Object”:“”,“ Timestamp”:“ 2016:03:27 00  :08:11“}'
 $ .ajax({
 type:” GET“,
 url:” http:// localhost:8081 / api / services / test /“,
数据:requestJSON,\  n contentType:“应用程序/ json; charset = utf-8”,
 dataType:“ json”,

因此我更改为从 r.Form < /p>

var主体[] byte 
用于密钥,_:=范围r.Form {
 body = [] byte(key)
 break \  n} 

但是现在curl请求失败了。 是否存在从golang中的http请求检索输入数据的标准方法? 我正在使用Go 1.6。 有人可以帮我吗?

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1条回答 默认 最新

  • doujieju0397 2016-03-27 15:29

    Sending a meaningful body with a GET request is disallowed by the spec. So your browser is probably sending an empty body. You can use POST instead. Its unsurprising that r.ParseForm() is not working because it expects the body to be encoded by application/x-www-form-urlencoded. Not json.

    If GET is more appropriate to send the user inputs to your server's request handlers you can use url query parameters.

    Quoting JQuery.ajax() docs for data parameter,

    Data to be sent to the server. It is converted to a query string, if not already a string. It's appended to the url for GET-requests. See processData option to prevent this automatic processing. Object must be Key/Value pairs.

    So you can do,

      type: "GET",
      url: "http://localhost:8081/api/services/test/",
      data: {AppName: "Proline", Properties:null, Object: ""}, // An object, not a string.
      contentType: "application/json; charset=utf-8",
      dataType: "json",
      success: function(data){alert(data)}

    An in the server,

    params := r.URL.Query()
    params.Get('AppName') // returns 'Proline'

    See docs: https://golang.org/pkg/net/url/#URL.Query

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